List of bands (16):

Hideous Divinity
High On Fire
Hoax Of Upsala
Hollywood Undead
I Built The Sky
I Prevail
Iapetus
Ice Age
Illdisposed
Illusion
Imminence
Immolation
Impellitteri
Imperia
In Flames
In Hearts Wake
In Virtue
Incarcerated
Incite
Inclusion